10 MORPHOLOGY AND EVOLUTION
&• bone in most Primates below Man. The uterus is usually simple, but the placentation varies.
The Order Primates is divisible into three sub-orders :
Lemuroidea, for the Lemurs, Galagos, Lorises and Aye-Aye ; the Tarsioidea for the Tarsiers ; and the Anthro-poidea for the [Monkeys, Apes and Man. This method of division accords better with the facts obtained from the study of comparative anatomy and palseontology than the inclusion of the Lemurs and Tarsius in a separate Order called the Prosimise. The word Prosimiee is useful in descriptive work as indicating that particular features are found in the Lemurs and Tarsius, but not in the other Primates.